}
switch (map()->instance_type()) {
case MAP_TYPE:
- os << "<Map(elements=" << Map::cast(this)->elements_kind() << ")>";
+ os << "<Map(" << ElementsKindToString(Map::cast(this)->elements_kind())
+ << ")>";
break;
case FIXED_ARRAY_TYPE:
os << "<FixedArray[" << FixedArray::cast(this)->length() << "]>";
split_kind, old_descriptors->GetKey(split_nof), split_attributes,
*new_descriptors, *new_layout_descriptor);
+ if (from_kind != to_kind) {
+ // There was an elements kind change in the middle of transition tree and
+ // we reconstructed the tree so that all elements kind transitions are
+ // done at the beginning, therefore the |old_map| is no longer stable.
+ old_map->NotifyLeafMapLayoutChange();
+ }
+
// If |transition_target_deprecated| is true then the transition array
// already contains entry for given descriptor. This means that the transition
// could be inserted regardless of whether transitions array is full or not.
--- /dev/null
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax --expose-gc
+
+var inner = new Array();
+inner.a = {x:1};
+inner[0] = 1.5;
+inner.b = {x:2};
+assertTrue(%HasFastDoubleElements(inner));
+
+function foo(o) {
+ return o.field.a.x;
+}
+
+var outer = {};
+outer.field = inner;
+foo(outer);
+foo(outer);
+foo(outer);
+%OptimizeFunctionOnNextCall(foo);
+foo(outer);
+
+// Generalize representation of field "a" of inner object.
+var v = { get x() { return 0x7fffffff; } };
+inner.a = v;
+
+gc();
+
+var boom = foo(outer);
+print(boom);
+assertEquals(0x7fffffff, boom);
--- /dev/null
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax --expose-gc
+
+var inner = new Array();
+inner.a = {x:1};
+inner[0] = 1.5;
+inner.b = {x:2};
+assertTrue(%HasFastDoubleElements(inner));
+
+function foo(o) {
+ return o.field.b.x;
+}
+
+var outer = {};
+outer.field = inner;
+foo(outer);
+foo(outer);
+foo(outer);
+%OptimizeFunctionOnNextCall(foo);
+foo(outer);
+
+// Generalize representation of field "b" of inner object.
+var v = { get x() { return 0x7fffffff; } };
+inner.b = v;
+
+gc();
+
+var boom = foo(outer);
+print(boom);
+assertEquals(0x7fffffff, boom);